ofdm

音频信号通过LM386放大，包括四元数的各种计算,D-S证据理论数据融合。( LM386 audio signal amplification, Including quaternion various calculations, D-S evidence theory data fusion.)

Multi-Carrier Cooperative Wireless Communication

此源代码为链路级仿真平台下，基于scm信道模型的信道空间相关性仿真分析(This source code for link level simulation platform based on SCM channel model channel space correlation simulation analysis)

1．利用RBF神经网络，解决异或问题： 1）异或问题本质上是一个二分类问题:输入为向量[x1,x2],输出是标量，取值限定为0或1.(1. Use RBF neural network to solve different or problems: 1) an xor problem is essentially a binary problem: the input is a vector [x1,x2], and the output is a scalar whose value is limited to 0 or 1.)

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对OFDM运用的QPSK的调制与解调，其中包括星座图，误码率的仿真(Use of OFDM QPSK modulation and demodulation, including constellation, BER simulation)

说明：  ：载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2 种算法，即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本 思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小，精度不高，而基于训练序列 的算法有较高的估计精度，但降纸了系统传输效率。(Abstract：Carrier frequency ofset is one of the key problems in OFDM system．Two foundational methods 。cycling prefix—based and training sequence—based algorithms。to estimate OFDM carriers~equency ofset are analyzed．Then it discusses their basic thoughts。implementing methods and simulation resuits． Finally。merits and demerits of every algorithm are supposed．It concludes that the cycling prefix— based algorithm has less complexity and less precision。and that the training sequence—based algorithm has better estimation performance at the cost of transmission efficiency．)

中兴手机v788d改cpn通过cpn改IMEI(change v788d cpn)

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RS码的simlink仿真，可以直接运行(RS code simlink simulation, can be directly run)